In what year did Abraham Lincoln stop slavery?

President Lincoln wrote and issues the Emancipation Proclamation, which was a set of two executive orders. The second portion or second executive order found in the Emancipation Proclamation freed slaves in those Southern States, which had not returned to the Union by January 1, 1863. So slaves were "technically" freed in the Southern States, still in rebellion from the Union, as of January 1, 1863. The Emancipation Proclamation did not address the status of slaves in Missouri, or the border states, thus slavery was still legal in these areas until the 13th Amendment was passed and ratified by 3/4s of all of the states. This occurred on December 6,1865.